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Finding the Fourth Proportional to 267.89, 369.47 and 212.76

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Solution

The fourth proportional to 267.89, 369.47 and 212.76 is: 293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    267.89 : 369.47 = 212.76 : x
  2. Step 2: Convert to fraction form
    267.89/369.47 = 212.76/x
  3. Step 3: Cross multiply
    267.89x = 369.47 × 212.76
  4. Step 4: Simplify right side
    267.89x = 78,607.37
  5. Step 5: Solve for x
    x = 78,607.37/267.89
  6. Step 6: Final answer
    x = 293.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.